433 bytes added,
15:23, 25 February 2021 Add an invoice item to a booking
Add New - adds the invoice item regardless of whether it exists or not.
Update or Add New - updates the invoice item if it exists, otherwise adds it as new.
Update only - updates the invoice item if it exists but will not add as new.
Invoice items are matched on the description, status and invoicee all being identical.
Quantity, price and vat values are updated on all matched invoice items.